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c20207d787
The GCC-style SDL2_LIBRARIES were lacking the rpath on Linux, which seems to be implicitly set when linking path/to/libSDL2-2.0.so.0.* and is explicitly set in the SDL2_LIBRARIES in sdl2-config.cmake (from some autotools variable), so I removed that hack and the format remains sth like "path/to/libSDL2main.a;path/to/libSDL2-2.0.so.0.14.1". It's still in the revision history in case it turns out that some platform really needs the "-L/path/to/bla/lib -lSDL2main -lSDL2" format
103 lines
4.6 KiB
CMake
103 lines
4.6 KiB
CMake
include("${CMAKE_CURRENT_LIST_DIR}/SDL2Targets.cmake")
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# provide ${SDL2_LIBRARIES}, ${SDL2_INCLUDE_DIRS} etc, like sdl2-config.cmake does,
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# for compatibility between SDL2 built with autotools and SDL2 built with CMake
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# the following seems to work on Windows for both MSVC and MINGW+MSYS and with both SDL2Config/Target.cmake
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# from vcpkg and from building myself with cmake from latest git
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# AND on Linux when building SDL2 (tested current git) with CMake
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# the headers are easy - but note that this adds both .../include/ and .../include/SDL2/
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# while the SDL2_INCLUDE_DIRS of sdl2-config.cmake only add ...include/SDL2/
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# But at least if building worked with sdl2-config.cmake it will also work with this.
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get_target_property(SDL2_INCLUDE_DIRS SDL2::SDL2 INTERFACE_INCLUDE_DIRECTORIES)
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# get the paths to the files to link against (.lib or .dll.a on Windows, .so or .a on Unix, ...) for both SDL2 and SDL2main
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# for the "normal"/release build they could be in lots of different properties..
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set(relprops IMPORTED_IMPLIB_RELEASE IMPORTED_IMPLIB_NOCONFIG IMPORTED_IMPLIB IMPORTED_IMPLIB_MINSIZEREL IMPORTED_IMPLIB_RELWITHDEBINFO
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IMPORTED_LOCATION_RELEASE IMPORTED_LOCATION_NOCONFIG IMPORTED_LOCATION IMPORTED_LOCATION_MINSIZEREL IMPORTED_LOCATION_RELWITHDEBINFO)
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# fewer possibilities for debug builds
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set(dbgprops IMPORTED_IMPLIB_DEBUG IMPORTED_LOCATION_DEBUG)
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foreach(prop ${relprops})
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get_target_property(sdl2implib SDL2::SDL2 ${prop})
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if(sdl2implib)
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#message("set sdl2implib from ${prop}")
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break()
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endif()
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endforeach()
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foreach(prop ${relprops})
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get_target_property(sdl2mainimplib SDL2::SDL2main ${prop})
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if(sdl2mainimplib)
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#message("set sdl2mainimplib from ${prop}")
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break()
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endif()
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endforeach()
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foreach(prop ${dbgprops})
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get_target_property(sdl2implibdbg SDL2::SDL2 ${prop})
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if(sdl2implibdbg)
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#message("set sdl2implibdbg from ${prop}")
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break()
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endif()
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endforeach()
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foreach(prop ${dbgprops})
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get_target_property(sdl2mainimplibdbg SDL2::SDL2main ${prop})
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if(sdl2mainimplibdbg)
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#message("set sdl2mainimplibdbg from ${prop}")
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break()
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endif()
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endforeach()
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if( sdl2implib AND sdl2mainimplib AND sdl2implibdbg AND sdl2mainimplibdbg )
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# we have both release and debug builds of SDL2 and SDL2main, so use this ugly
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# generator expression in SDL2_LIBRARIES to support both in MSVC, depending on build type configured there
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set(SDL2_LIBRARIES $<IF:$<CONFIG:Debug>,${sdl2mainimplibdbg},${sdl2mainimplib}> $<IF:$<CONFIG:Debug>,${sdl2implibdbg},${sdl2implib}>)
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else()
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if( (NOT sdl2implib) AND sdl2implibdbg ) # if we only have a debug version of the lib
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set(sdl2implib sdl2implibdbg)
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endif()
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if( (NOT sdl2mainimplib) AND sdl2mainimplibdbg ) # if we only have a debug version of the lib
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set(sdl2mainimplib sdl2mainimplibdbg)
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endif()
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if( sdl2implib AND sdl2mainimplib )
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set(SDL2_LIBRARIES ${sdl2mainimplib} ${sdl2implib})
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elseif(WIN32 OR APPLE) # I think these platforms have a non-dummy SDLmain?
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message(FATAL_ERROR, "SDL2::SDL2 and/or SDL2::SDL2main don't seem to contain any kind of IMPORTED_IMPLIB* or IMPORTED_LOCATION*")
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elseif(sdl2implib) # on other platforms just libSDL2 will hopefully do?
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set(SDL2_LIBRARIES ${sdl2implib})
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message(STATUS, "No SDL2main lib not found, I hope you don't need it..")
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else()
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message(FATAL_ERROR, "SDL2::SDL2 doesn't seem to contain any kind of lib to link against in IMPORTED_IMPLIB* or IMPORTED_LOCATION*")
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endif()
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# TODO: should something like INTERFACE_LINK_LIBRARIES be appended? or wherever -mwindows and things like that
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# might be defined (if they were defined by the CMake build at all; autotools has @SDL_RLD_FLAGS@ @SDL_LIBS@)?
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# LINK_DEPENDS? LINK_FLAGS?
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endif()
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get_filename_component(SDL2_LIBDIR ${sdl2implib} PATH)
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# NOTE: SDL2_LIBRARIES now looks like "c:/path/to/SDL2main.lib;c:/path/to/SDL2.lib"
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# which is different to what it looks like when coming from sdl2-config.cmake
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# (there it's more like "-L${SDL2_LIBDIR} -lSDL2main -lSDL2" - and also -lmingw32 and -mwindows)
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# This seems to work with both MSVC and MinGW though, while the other only worked with MinGW
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# On Linux it looks like "/tmp/sdl2inst/lib/libSDL2main.a;/tmp/sdl2inst/lib/libSDL2-2.0.so.0.14.1" which also seems to work
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# the exec prefix is one level up from lib/ - TODO: really, always? at least on Linux there's /usr/lib/x86_64-bla-blub/libSDL2-asdf.so.0 ..
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get_filename_component(SDL2_EXEC_PREFIX ${SDL2_LIBDIR} PATH)
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set(SDL2_PREFIX ${SDL2_EXEC_PREFIX}) # TODO: could this be somewhere else? parent dir of include or sth?
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unset(sdl2implib)
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unset(sdl2mainimplib)
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unset(sdl2implibdbg)
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unset(sdl2mainimplibdbg)
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unset(relprops)
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unset(dbgprops)
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